JEE Main questions
34495 published questions with worked solutions.
- An inductor of self inductance 1 H is connected in series with a resistor of 100 ohm and an ac supply of 100 volt, 50 Hz. Maximum...
- A particle of charge 1.6 and mass 16 is present in a strong magnetic field of 6.28 T. The particle is then fired perpendicular to...
- A solid sphere with uniform density and radius R is rotating initially with constant angular velocity ( _1) about its diameter....
- In a Young's double slit experiment, two slits are located 1.5 mm apart. The distance of screen from slits is 2 m and the...
- The incorrect relationship in the following pairs in relation to ionisation enthalpies is
- Consider the ground state of chromium atom (Z = 24). How many electrons are with Azimuthal quantum number l = 1 and l = 2...
- A toxic compound "A" when reacted with NaCN in aqueous acidic medium yields an edible cooking component and food preservative...
- Given below are two statements : Statement I : Alcohols are formed when alkyl chlorides are treated with aqueous potassium...
- 'X' is the number of electrons in t_ 2g orbitals of the most stable complex ion among [Fe(NH_3)_6]^ 3+ , [FeCl_6]^ 3- ,...
- Given below are two statements: Statement (I): Molal depression constant K_f is given by M_1RT_f S_ fus , where symbols have...
- Half life of zero order reaction A → product is 1 hour, when initial concentration of reactant is 2.0 mol L^ -1 . The time...
- Match List I with List - II. List – I (Separation of): (A) Aniline from aniline-water mixture (B) Glycerol from spent-lye in soap...
- Given below are two statements: Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the...
- The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:
- Consider the given data: (a) HCl(g) + 10 H_2O(l) HCl.10H_2O, H = -69.01 kJ mol^ -1 (b) HCl(g) + 40 H_2O(l) HCl.40H_2O, H = -72.79...
- Sea water, which can be considered as a 6 molar (6 M) solution of NaCl, has a density of 2 g mL^ -1 . The concentration of...
- A metal complex with a formula MCl_4.3NH_3 is involved in sp^3d^2 hybridisation. It upon reaction with excess of AgNO_3 solution...
- x mg of Mg(OH)_2 (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of x...
- The amount of calcium oxide produced on heating 150 kg limestone (75% pure) is _____ kg. (Nearest integer) Given: Molar mass (in...
- The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm^2 mol^ -1 and the ionic...